Actuating lock switches, function - GF80.20-P-3007S

MODEL 220 up to 1.6.00 with CODE (491) U.S. version 

MODEL 220 up to 1.9.99 with CODE (498) Japanese version 

Fig 1: Actuating Lock Switches, Function Diagram

The left front lock switch (S86/1) on vehicles with left-hand steering or the right front lock switch (convenience) (S87/2) on vehicles with right-hand steering as well as the trunk lid lock switch (S88/2) can be actuated with the mechanical key. This unlocks or locks the vehicle. The anti-theft alarm (ATA)  is also activated or deactivated.

Function sequence for left-hand steering as an example  Actuation of the left door lock switch is read in voltage coded by The left front door control module (N69/1)  and relayed to the EIS control module (N73)  via the CAN bus.

The EIS control module (N73)  transmits the command to lock or unlock the vehicle to the PSE control module (combined) (A37)  . The PSE control module (combined) (A37) recognizes immediately that the trunk lid lock switch (S88/2)  is actuated.

The PSE control module (combined) (A37)  locks/unlocks the vehicle pneumatically. This is confirmed by the turn signal system  and release of the interior switches is performed  in the same manner as when the vehicle is locked or unlocked with the remote control key  .

Without lock switches the corresponding door/trunk lid can only be locked/unlocked mechanically. The ATA triggers an alarm